Necker cube copying ability in normal elderly and Alzheimer's disease. A community-based study: The Tajiri project

Yoichi Shimada, Kenichi Meguro, Mari Kasai, Masumi Shimada, Hiroshi Ishii, Satoshi Yamaguchi, Atsushi Yamadori

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Background: The purpose of this study was to investigate the ability of normal elderly participants and patients with Alzheimer's disease to copy the Necker cube. Method: One hundred and seventy elderly participants were randomly selected from the town of Tajiri, northern Japan, and were classified into three groups based on the Clinical Dementia Rating (CDR): CDR 0, healthy; CDR 0.5, questionable dementia; and CDR 1 and 2, mild and moderate dementia. Dementia patients (CDR 1 and 2) met the criteria of probable AD of the NINCDS-ADRDA. Using eight original criteria, we examined their ability to copy the Necker cube. Results: Most CDR 0 participants could at least succeed in copying a simple cube. About a half of the AD patients could not draw a three-dimensional figure. Among the CDR 0.5 participants, we found a 'two-peak' distribution. Conclusion: Copying the Necker cube may be one useful task for the detection of very mild Alzheimer's disease.

Original languageEnglish
Pages (from-to)4-9
Number of pages6
JournalPsychogeriatrics
Volume6
Issue number1
DOIs
Publication statusPublished - 2006 Mar

Keywords

  • Alzheimer's disease
  • CDR
  • Copying ability
  • Necker cube
  • Normal aging

ASJC Scopus subject areas

  • Gerontology
  • Geriatrics and Gerontology
  • Psychiatry and Mental health

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